Angles created by Chords
Explore the arcs created by 2 chords.
Move points B, C, D, and E. Compare the average of the arcs with angle EFC.
Nature of roots of a quadratic equation in geogebra
Inflexion Points and Concavity
Multiply by i vectors
9.1.3 Pre #1103407 correct A
Geometric Intuition of Multiplying Numbers
Multiplying by numbers using vectors